کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
629025 1455498 2006 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ageing of PES industrial spiral-wound membranes in acid whey ultrafiltration
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Ageing of PES industrial spiral-wound membranes in acid whey ultrafiltration
چکیده انگلیسی
The objective of this paper is to characterise and locate the thin layer of irreversible fouling in a spiral-wound membrane of ultrafiltration of acid whey, after 8000 h of production in a French dairy. Several physico-chemical techniques as SEM-EDX, SEM-FEG, FTIR-ATR and AFM were used. Fouling was mainly organic and between 0.5 and 5 μg of proteins per cm2 of membrane were reached. The thickness of the fouling layer was higher at the collector axis of permeate and decreased with the distance from this axis on an unwound sheet of the membrane. Ageing of both PES active layer and polypropylene spacers was evidenced by this autopsy. In-depth study was achieved at 50°C for PES membrane ageing in alkaline, acid, alkaline chlorine oxidant and a commercial alkaline cleaning solution (Ultrasil 10). The PES membrane appeared stable in all solutions except those containing chlorine. It was shown by FTIR-ATR that the C-S bond in PES (Ph-SO2-Ph) was broken and led to a Cl-S bond after long-term treatment in alkaline bleach.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 192, Issues 1–3, 10 May 2006, Pages 25-39
نویسندگان
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